1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/* ==========================================
* JGraphT : a free Java graph-theory library
* ==========================================
*
* Project Info: http://jgrapht.sourceforge.net/
* Project Creator: Barak Naveh (http://sourceforge.net/users/barak_naveh)
*
* (C) Copyright 2003-2008, by Barak Naveh and Contributors.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, write to the Free Software Foundation,
* Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
/* -----------------
* PrefetchIteratorTest.java
* -----------------
* (C) Copyright 2005-2008, by Assaf Lehr and Contributors.
*
* Original Author: Assaf Lehr
* Contributor(s): -
*
* $Id: PrefetchIteratorTest.java 645 2008-09-30 19:44:48Z perfecthash $
*
* Changes
* -------
*/
package org.jgrapht.util;
import java.util.*;
import junit.framework.*;
public class PrefetchIteratorTest
extends TestCase
{
//~ Methods ----------------------------------------------------------------
public void testIteratorInterface()
{
Iterator iterator = new IterateFrom1To99();
for (int i = 1; i < 100; i++) {
assertEquals(true, iterator.hasNext());
assertEquals(i, iterator.next());
}
assertEquals(false, iterator.hasNext());
Exception exceptionThrown = null;
try {
iterator.next();
} catch (Exception e) {
exceptionThrown = e;
}
assertTrue(exceptionThrown instanceof NoSuchElementException);
}
public void testEnumInterface()
{
Enumeration enumuration = new IterateFrom1To99();
for (int i = 1; i < 100; i++) {
assertEquals(true, enumuration.hasMoreElements());
assertEquals(i, enumuration.nextElement());
}
assertEquals(false, enumuration.hasMoreElements());
Exception exceptionThrown = null;
try {
enumuration.nextElement();
} catch (Exception e) {
exceptionThrown = e;
}
assertTrue(exceptionThrown instanceof NoSuchElementException);
}
//~ Inner Classes ----------------------------------------------------------
// This test class supplies enumeration of integer from 1 till 100.
public static class IterateFrom1To99
implements Enumeration,
Iterator
{
private int counter = 0;
private PrefetchIterator nextSupplier;
public IterateFrom1To99()
{
nextSupplier =
new PrefetchIterator<Integer>(
new PrefetchIterator.NextElementFunctor<Integer>() {
public Integer nextElement()
throws NoSuchElementException
{
counter++;
if (counter >= 100) {
throw new NoSuchElementException();
} else {
return new Integer(counter);
}
}
});
}
// forwarding to nextSupplier and return its returned value
public boolean hasMoreElements()
{
return this.nextSupplier.hasMoreElements();
}
// forwarding to nextSupplier and return its returned value
public Object nextElement()
{
return this.nextSupplier.nextElement();
}
public Object next()
{
return this.nextSupplier.next();
}
public boolean hasNext()
{
return this.nextSupplier.hasNext();
}
public void remove()
{
this.nextSupplier.remove();
}
}
}
// End PrefetchIteratorTest.java
|
